Oil burner



Oct. 19 1926.

F. L. STAFFORD OIL BURNER Filed April 20, 1926 'Jllllllll to collect andPatented Oct. 19, 1926.

UNITED STAT-es P ELQYD L. SUIAFFORD, OF REPUBLIC, KANSAS.

om BURNER.

application filed April 20, 1926. Serial No. 103,306,

The present invention relates to oil lourners, and Vmore particularly toa burner of the openfretort type utilizing a naturaldraft. An object ofthe present invention is to provide anoil burner capable of producing ablue flame when used on a high and on a low "lire and which `is of theopen vretort type utilizing natural draft" andi" gravity feed, and aburner which produces practically no smoke or carbon, and one whichrequires no cleaning or `other attention duringY its long 1continueduse.

`Another object of the invention is to pro vide a burner with means forso distributing a natural draft that butasmall draft isr"equire`d, andwhich consumes completely `and thoroughly a relatively small amount ofoil but which `at the same time produces a relatively yhet flame.

` A further object .of the invention is to provide a burner with animproved wiclr fand spreader, theisarne `comprising a wire encasedginasbestos and supporting a layer of wood ashes, utilizing theprinciple ofthe oil adhereing to and following metal vmore readilythan ashes so tofirst spread the oil. vand subsequently effect the absorp- `ti'onof theoilfby the lashes to vaporize the ashes, particularly under theinfluence of heatfor distribution tothe draft of air directed over theupper surface level of the ashes.

A further feature of this invention is to provide means of draft forenveloping the inner and outer sides of the burner, particu larly whenythe draft is high or at `full force, to eliminate vibrationland backpressure `in theburner and automatically takes care of Athe n draftunder all weather conditions in VSupplying the proper amount ofoxygengto produce the blue llame and a quiet llame which will notdicker.

The invention also aims to provide means drain olf excess quantities ofoilv to` prevent oil from overflowing the burner.V y

The invention also provides an improved draft ring to insure the properadmission of air to the burner even when the saine is packed,`particularly when Athe burneris iin- "stalled in furnaces and the like.

` The above and various other vobjects and advantages of this inventionwill inpart be described in, and in part be understood from thefollowing detailed description of the through an oil burner yto thepresent invention, and

rbase plate of `hase ring` 10 is portion upon` the upper edge of a pan`the-hase ring 10.

-lieight than .its outer `flow pan 13.

41.6 secured at by `bolts 17 or Vin the annular wall of .is provided`with present preferredembodiment, the same beillustratedintheaccompanying drawin wherein Fig; -1 is a vertical central sectiontaken constructed according I+1g" :2 is a horizontal section takenthrough theburner on the line 2--2Yof`Figx 1.

Referring to the drawing, 10 designates 'a ring form having a centralair opening' 11 and which at its upper 'side is dished out to provide agene-rating cup 12 extending `annular-ly in tliebase ring. The supportedat `its outer edge which is provided with an outstanding flange aboutits upperedge extending beyond The pan 13 is thus relatively large andisadaptedto catch the overflow from the burner, the inner marginallflange 15 of the base ring 10 being lof less flange or wall to permitof the overflow ofthe oil into the over- Arranged about the overflow pan13 `is a downwardly curved draft ring its upper edge to the flangelllthe like.' This draft ring 16 at `its lower edge stands outwardlyaboutthe pan 13and provides a free air passageabout the pan, the airentering the pan through relatively large draft openings 18 formedthepan. Surniounting the base ring 1() and supporte'dthereby'is an oilring .19 of ring form providing through the center thereof.

a draft passage `20 upwardly The draft passage 2O is of smaller diameterthan/the draft passage 11 in the base ringand the oil ring 19 slightlyoverlaps the inner edge portion of the base ring `10.` The draft ring 19isV provided with a depending outwardly curved supporting .flange 21which seats in the generating cup 12 of the base ring 10 and spacedopenings 22 in its lower edge to establish communication in thegenerating cup between the opposite sides of the supporting flange 21'.`This admits free passage of air and oil beneath the oil ring and overthe inner edge of the base ring `The oil ring 19 is zUsshaped in crosssection to provide `a relatively deep annular trough, and fitting' inthis trough is au inner lining' 23 of similar shape .but `havingloutturned flanges 24 at its upper inner and outer lli) marginal edges toseat upon the upper neath the disk 31 I a spreader Capor disk edges ofthe draftring 19. in the bottom of this draft ring 19, so formed. isplaced a ririg of asbestos 25 wrapped about a core of wire 25, andfitting in the draft ring above the asbestos 25 is a body of wood ashes27 or Ihe like which is levelled with theupper edge of the draft ring.

An oil feeding pipe 28 is carried upwardly int-o the draft ring 16 andthrough one side ofthe overflow pan 18, the pipe 28 being thence carriedupwardly through the draft opening 11 at one side thereof and opensvinto the bottom of the oil ring 19. The oil ring 19 is provided in itsdraft opening 2O with a cross bar 29 extending across the lower edgefofthe draft rijngqand whichsupports a threaded stem 30 which extendsupwardly throughv the draft opening 2O and supports 31. The disk 31extends in overlapping relation at its outel edge with respect to theoil ring 19 and terminates inwardly of the outer edge thereof, andcompletely covers the upper end of the draft opening 2O so as to spreadand direct the upwardly flowing air outwardly over the upper surface ofthe body of wood ashes 27.

ln the operation of the-burner, oil enters through pipe '28 into thebottomV of the oil ring 19 and is absorbed by the vasbestos 25 and isbroken up by contact with the wire core 26. The oil follows the wirecore 26 and is evenly distributed about therbottom of the annular oilring 19 ast-he oil will follow the metal more readily than the ashes.The oil, being broken up7 enters the body of wood ashes 27,.and when thesame are heated7 the oil is vapor-ized and such vapor is permitted toescapeat the upper surface of the body of ashes 27 and is brought intocon tact with the air which is passing` from beand over the oil ring 19.

. The openings 22 in the base 21 of the oil ring 19 admit free air topass around burner when the draft is high and thus checks vibration orback pressure in the burner7 this being an important feature of thepresent burner and effecting the automatic regulation of the draft underall kinds of weather conditions and admitting the proper amount ofoxygen at alln times to produce the steady blue flame.

It will be noted that the overflow pan is below the air inlet and istireproof and is relatively largefas it extends to the outer edge of thebase ring 10 so as to catch all overflowing Voil and prevent the oilfrom dripping outwardly `frown the burner. The overflow pan 18 isprovided with a drain pipe 32 suitably located to carry off any excessoil which may accumulate in the bottom of the pan.

The provision of the draft ring 16 insures a complete draft through theburner at all times and prevents the draft being shut off particularlywhen packing or the like is used about the burner in certaininstallations, such as in furnaces and the like as the draft ring 16protects the draft openings 18 in the outer wall of the overflow pan 13.

The'above described burner is adapted for Vinstallation and use in b1coders, heaters, furnaces, boilers and wherever heat is required and alsmall amount of draft is available.

It is of course understoodthat various changes and modications may bemade in the details of construction and design of the above specificallydescribed embodiment of this invention without departing from the spiritthereof, such changes and modifications being restricted only by thescope of the following claims. V

What is claimed is:

1. An oil burner comprising a base ring, an oil ring surmounting thebase ring, means for feeding oil to the bottom of the oil ring,distributing means in the bottom of the oil ring, vaporizing means inthe top of the oil ring, a spreader disk arranged in slightlyoverlapping relation tothe centralportion of the oil ring, and anoverflow pan secured beneath the base ring and having draft openings inthe sides thereof for the admission of air for passageupwardly throughsaid base and oil rings.

2. An oil burner comprising a base ring, an oil ring spaced above thebase ring and being of less diameter than that of the base ring7 aspreader disk arranged above the oil ring and overlapping the same, anoverflow pan of the diameter of the base ring secured beneath the sameand having draft openings in thev annular wall thereof, and an outwardlyand downwardly curved draft ring secured about the overflow pan forprotecting said draft openings.

3. An oil burner comprising a base ring, an oil ring spaced above thebase ring7 means for feeding oil to the bottom of the oil'ring, asbestosin the bottom of the oil ring to absorb the oil, a metal core embeddedin the asbestos to distribute the oil evenly within the ring7 and a bodyof wood ashes 'in the upper part of the oil ring for vaporizing thedistributed oil.

4;. Anoil burner comprising a base ring, an oil ring having a dependingapertured flange bearing upon the upper surface of the base ring, anoverflow pan secured beneath the base ring and `having draft openings inits outer wall, a draft ring rsecured to the top of the pan andextending downwardly and outwardly thereabout, a stem carried inthe'central portion of the oil ring and extending upwardly therethrough,a spreader disk mounted on the stem and partially overlapping the oilring, apipe leading upwardly through the overflow pan and the base ringand opening into the bottom of the oil ring, metallic spreading means inthe llO bottom of the oil ring, absorbing means cup in spaced relationto and concentric With encasing saidinetallic means, and vaporizing theinner and'outer flanges of the cup for means in the top of the oil ring.supporting the oil ring in spaced relation 5. An oil burner comprising abase ring above the inner flange, rneans for feeding 5 having an annulargenerating cup in its upoil to the oil ring, means for spreading and 15per sicle forming inner and outer annular vaporizing the oil in the oilring, and means flanges With the inner flange of less height or feedingair upwardly through and loe than the outer flange, an oil ring havingan tween the base and oil rings. annular trough and provided with adepend- 10 ing recessed iange seating in the generating FLOYD L.STAFFORD.

